Secondary charge for compound detonators



PANE', F "WILMENWEON, DEL-WABE,

BENNETT GROTTA, OF TMAQJ, PEEQ'SYLVANEA, ASSGNR T ATLAS LWDEE- @Gili- SECGEDRY CHARGE .FR C'GLPUND DETONTGR-.

No Drawing.

To ai? Iwhom it lmay conservi:

Be it known ha'c BENNETT Enorm, a oiin zen of the United States, residing et Teniaqna, in the county of Schuylkill and Stale of Pennsylvania, has invented Certain new and useful Improvements in Secondary lCharges for Compound Doonnors, of which the following is n specific fion.

My invention relates to iinproveniens in 1G that type of detonntory commonly known es compound detonutors and 'relates parlionlarly to lle n'min or secondary charge.

For along time fuiniinae of mercury was regarded as ille only explosive compound 5 suitable for n rletonator composition. This belief has been modified in recent years by the partial substitution of the customary fulminnte charge by some other explosive which, alone, would notV be suitable for (letonatoi' Compositions. These secondary ef;- plosives, as they :1re Commonly known, may not be detonated by simple ignition as is the case with fulniinate of mercury, lout they are themselves initiated by a priming charge of ulminae of mercury and more recently by a charge containing a heavy niesl azide, Examples of secondary explosives vvnich. have been suggesecl for this purpose are hexenirodiplienylamine, eranii'roaniline, ivrii'iitroylene, and 'irinilroplienylmetliylnisrosrnine, which is Commonly' known tetryl. i

lois well recognized thai Une probieins presented in ille produebion o satisfactory deonator Charges are quite lili/arent from those exist-ing in the field of general explosives and that a parently slight changes in proporions an in the ing'iefliens frv qnently prodnee surprising differences in reenli.

is is also n Well estalnlislied fact thas filetone'ois containing e suiaoly primed ondary explosive are vesily superior to the ordinary ulminate composition (leonaor 15 in so for as Lletonnting eiliciency is oonoez'ne, but the general application of fliis type o (letonntor has been greatly restricted because of the ggjrener oost of manufacture as compared 'with ordinary fulininaie den onators. Despite ne substituiion of a pari of lie fulminue charge viili a less Cosl'ly nitro-body the ultiniae'coss of iie leouaior thus charged is orlinarily no less .and usually grenier than limi of all-i`uln^iinnfle (leien-a- Applcation lledl March l, 1923. erill No. 622,221).

tors. This is dus to the increased number l". of operations required for the so-callerl oompound deonaors and also to ille added expense of specially construced' deionaior shells which are usually requirei'l.

By enensive experimensiion lieve s fennel tim lie above inenioned obsaole the nppluseiion of elle compound type ofileonnfoil may be largely over-rome by mining with ille 'niroeromst'ic Qolnpouncis thai ere suiaiole for cletonator Cherries anoher less eosly material which by ilself is not suited for iietonator eoniposiiions 'but which, when mixed with the nitronromatic compounds in suiable proportions7 produces e coinposiion equivalent in eiiieiency io inni of 'the orioinel ni'ronron'iatic compound. The materiel which llave found suitable for iiis edmixure is 'nilroeelinlosen of which grounell smokeless powder is n Yforni admirably suited :f r the purpose in. question.V

have found liat mixtures of subir nilgroamnistie compounds as tetryl or ternnilr eniline with nitroceliulose., in 'the form of ground smokeless powder, in suitable pew portions, consi-iluso secondary detonsior compositions approximaiely equivslen, to tile original ntroaronisie eoniponnfl Willi respe't toi (e) initisi'sing value' Who-ni an plied to insensiive oonirnereioi 'Xplosiv/ss', (lo) actuel strength es measured by sny oi? the Well known sesosj (o) miserias, es newG urefi by lie usuel ess of t1: proper/Ly, size oherge se quired for initiation, {e} velocity of dem nat-ion.

lius my invention oonstiiuies clislsine; aclvsnoe in the elass of iniiiafiing esolosives by rendering feasible lle gsi-orlo sion compound cleonators witii 'lieir Well known ei'lvaiages over ordinary com` y nalors snel liis e eosf; ver parison Wien olier compound The following eri-amples iilusl-rsi plicaion oii my invenioii:

main oliergs consist" L of s misi/ure of of iene/fi en n. ground smokeless por. @lloro-eci pressed in. en orc? i This l secondary elim-'ge is in/interi. will?. suieble priming; charge. L sin charge eonsisfi .4 o? 53.5; greso. .are equal Us o.. Jeremie-,- sniline end ground smokeless fseci inzo an ordinary deto- Charge inii im. ng chart;

. ing of 0.5 grain qual paris of tcryl und niirmfiluioso Charged and an ordinary detonu'or siieii.

Cini is initiated with i io not iimi' mypioyo 1n any or die foregoing oi;-

T er pfff zi priming' charge n'wicujy or charge conniiiie, in Coniimon o' n @rciu'y or any smdani@ ooniposiiion,

novo oiod specific examples of tio f, wounds v wish 'to have, .it that in so doin tho scopo. of my .ion is nor r "no thas@ particuiosiY-Ls. The spina of my invention i igroaronmio compounds ifor detonzzor Composi ijf suitable pi'oliortions nioso. :it is also to be ooeiiuioso in any 4Sorm L LQnL--vfiiohor it bs in groun minces or in ..iy

main charge consists of any suitzioie nitroaromatio Compound and ground smokeless powder mixed iiorewih.

E. A compound (ietonaior 0 "which iiie main vcharge consists of tomyl and ground smokeless powder mixed therewith in suitzxoi@ proportions.

3. A. compound dotonator comprising :L main charge consisting of n suitabie nitrosromatic compound and ground smokeless powder and :i priming charge containing,l 'uiminiite of mercury.

A compound detonmor comprising s main Cim'go consisting; of :i suitable nitroaromatic. compound and nirmreiluioso anni a priming charge therefor.

i compound deionzitor comprising :i main charge consisting of :i mixture of a suitable nitroaromatic compound and nitro- Coiiuiose and a priming charge Containing fuhnin'ate oir' mercury.

.compound detonator comprising; :L main charge consistingr of a mixture of a. Sniizibie nitroaromatio Compound und nirooeiluioso and s. priming Ch-.Ligfo containing; Euiminaio of mercury and a heavy mei'ni azi io.

' testimony whereof no afiixes his signai'ie presence of two witnesses.

' BEK iui'o in NETT GROTTA. Witnesses: M. Coon,

- .ALLAN Knmr. 

